I am puzled about numbers

[A Evans]

Hello I came across an interesting loop in math today
To me its interesting anyway I don't know if it will interest you

var = 999 % 333

print var
>>> 0

var = 9999 % 333
print var
>>> 9

var = 99999 % 333
print var
>>> 99

var = 999999 % 333
print var
>>> 0


var = 9999999 % 333
print var
>>> 9


var = 99999999 % 333
print var
>>> 99


var = 999999999 % 333
print var
>>> 0

and so on

I guess that just goes to show nine is a universal number
or am I just completely insane and everyone knows this already